Share this page!

Enter URL or ID to Unroll

You can paste full URL like: https://x.com/threadreaderapp/status/1644127596119195649
or just the ID like: 1644127596119195649

How to get URL link on X (Twitter) App

  1. On the Twitter thread, click on or icon on the bottom
  2. Click again on or Share Via icon
  3. Click on Copy Link to Tweet
  4. Paste it above and click "Unroll Thread"!
  5. More info at Twitter Help
Anthony Masiello Profile picture
Anthony Masiello
@antmasiello
Climate, weather, sub-seasonal to seasonal processes/forecasting. Music, song writing, dad.
Apr 15, 2023 • 5 tweets • 2 min read
Whether it's tropical cyclones, SE US flooding, or widespread record warmth, there is a nonlinear component to the general circulation that drives the anomalous weather. An amplified ER worked in tandem with an Asian synoptic RWT to amplify the flow (see subsequent tweets). Watch the darker blue colors just off the Equator move westward in this moving 5-day mean (negative OLR=convection), as the gradient in velocity potential tightens up near the Mei-yu Front. Impressive coherence for the RW here and its interaction with the Extratropics.
Jan 16, 2023 • 14 tweets • 6 min read
🧵The Pacific Jet & collapse-of-La Niña pattern in late December 2022 was interesting. I want to talk about it some more (BTW, it has been a while! I hope you're all doing well!). I'm going to focus on general circulation, and then dive into synoptic RWTs another time. (1/n) This thread alone won't answer *the-why* solely. But, the rapid onset to the -TNH pattern can be a good place to start analysis (cpc.ncep.noaa.gov/data/teledoc/t…). Eric touched on this while the changes were underway. But what are the nature of these years? (2/n)
Oct 14, 2022 • 15 tweets • 5 min read
1/ Thread: Volcanoes, South American Monsoon System (SAMS), and the ITCZ over the Atlantic (influence on TCs). Research focuses on typical SO2/aerosol temp relationships of famous eruptions and then proceeds from there, but 2022 is opposite of those. cp.copernicus.org/articles/12/96… 2/ As previously discussed, the water vapor cooling in the southern hemisphere's stratosphere, and tropospheric warming, is the opposite configuration of years that followed Pinatubo/El Chichón. This influences the SAMS.
Sep 29, 2022 • 4 tweets • 2 min read
The gradual move NE on the ECMWF for LF location tomorrow: Mostly due to starting point/speed off FL. *Image not updated for 12z run yet: Image
Jun 23, 2020 • 8 tweets • 4 min read
[#severe climo thread] Is there something about late May? I totaled all severe reports for NY, NJ, PA, DE, MD and DC for the months of April to July (data source SPC, 1955-2018). For severe wind reports, they increase overall from April to July (but notice late May rise). (1/8) In terms of severe hail, notice the peak in reports happens in late May to early June with the 10-day average peak right around the infamous date of 5-31. (2/8)
Jan 1, 2020 • 8 tweets • 2 min read
Here's a 10-day mean SST in Reanalysis that spans the month of December in 3 blocks. It is scaled to be ~ 80°F-90°F. Of course you've heard about Australia's warmth. The +SSTa have intensified near WA/NT/QLD. Some SST approaching 90°F there. EPS TC forecast in the next 10 days. This is why the RMMs are forecast to spike into phase 4-6.
Feb 27, 2019 • 10 tweets • 2 min read
Profiles tonight are marginal all around but worth mentioning. Not a lot of sunshine today and it has been cold. Profiles are somewhat supportive of spotty freezing drizzle. Not certain if sufficiently moist. Doesn't look like it goes into AM commute either with wind shift. Here's an example NAM sounding for tonight. Not all modeling looks like this.